Answer:
The correct answer is A. History should be viewed from perspectives that are not commonly held.
Step-by-step explanation:
A is correct answer because revisionist believe that history should be re-written and re-evaluated. That is mostly done because they believe that political momentum was the key factor in the shaping process of historical interpretation.
B is not correct because this is a historical method that is widely accepted.
C is not correct because of the same reasons as B.
D is not correct because this is also an accepted scientific method that historian should research certain period.
E is also not correct because this is also a method that is widely accepted by historians.